Hans Sluga has broad philosophical interests of both a systematic and a historical kind. These cross the boundaries of so-called “analytic” and “Continental” philosophy. From the latter tradition he has acquired a strongly historical bent. Over all he is most indebted to Wittgenstein.
Among his systematic concerns are issues in the philosophy of logic (in particular the question how to conceive logic in naturalistic and historicist terms), the theory of meaning, and epistemology.
In recent years he has become increasingly concerned with political philosophy and specifically with what he calls “the diagnostic tradition in political philosophy” which he sees extending from Marx and Nietzsche to Carl Schmitt, Hannah Arendt, and Michel Foucault. In reflecting on these matters he has asked himself how one might apply Wittgenstein’s lessons to political philosophy.
He has also been interested for a long time in the history of analytic philosophy (Frege, Moore, Russell, the Vienna Circle, Wittgenstein). And on the more Continental side in Schopenhauer, Nietzsche, Heidegger, and Foucault. In addition, he has had a long-standing interest in ancient Greek thought and have also more recently acquired one in Chinese philosophy.